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This circuit breaker conforms to national standard GB1984-89 "A.c. high voltage Circuit breaker" and international electrician committee standard IEC56 "High-pressured Exchange Circuit breaker" request.
Circuit breaker main characteristic
a Uses the vacuum extinguishing of arc, opens breaks the ability strongly, the electricity life is long, mechanical life 10,000;
b Structure simple, exempts the maintenance, the overhaul period is not long;
c Insulating ability good, the anti- contamination ability is strong;
d May match the spring or the electromagnetism holds the drive mechanism, the machine capability is reliable, but frequently operates; Does not have the fire and the detonation hidden danger;
e The internal installation current transformer measuring accuracy reaches 0.2 level, may realize the three-phase differential motion protection;
f congeals the dew controller, can maintain the circuit breaker under the certain temperature humidity the reliable movement.
Main technical parameter
Fixed parameter
Project | Unit | Parameter | ||
Rated voltage | kV | 40.5 | ||
Fixed insulation level | 1min labor frequency pressure resistance | Dryly tries | kV | 95 |
Wet tries (to insulate to place outside) | 80 | |||
The thunder presses the impact pressure resistance (peak value) | 185 | |||
Nominal current | A | 1250 , 1600 , 2000 | ||
The rating short-circuits the drop-out current | kA | 20 , 25 , 31.5 | ||
Fixed operation sequence | ~0.3~ ~180S~ | |||
The rating short-circuits the drop-out current to open breaks the number of times | time | 20 | ||
The rating short-circuits the pass to gather the electric current (peak value) | kA | 50 , 63 , 80 | ||
Fixed peak value withstanding electric current | ||||
Fixed short-time withstanding electric current | kA | 20 , 25 , 31.5 | ||
The rating short-circuits the duration | s | 4 | ||
Mechanical life | time | 10000 | ||
Fixed operation voltage and assistance return route rated voltage | V | Junction, direct current 220 , 110 | ||
Sound of something astir contact permission attrition thickness | mm | 3 | ||
Weight | kg | 800 | ||
3.2 Machinery adjustment parameter
The contact opens the distance | mm | 20±2 |
Contact contact travelling schedule | mm | 4±1 |
Evenly divides equally the floodgate speed | m/s | 1.5±0.2 |
Average Gathers floodgate speed | m/s | 0.7±0.2 |
The contact Gathers floodgate bounces the time | ms | ≤ 2 |
Three coincides (minute) the floodgate same time the time difference | ms | ≤ 2 |
Gathers floodgate time | ms | ≤ 150 |
Minute floodgate time | ms | ≤ 60 |
Each return route DC resistance | µΩ | ≤ 100 |